Sterilizer.



C. MEYER. 'STERILIZERY.

APPLICATION FILED MAY], 1917.

Patented Aug. 21, 1917.

CONRAD MEYER,

OF NEW YORK, N. Y., ASSIGNOR T CARL WI'ITIVIANN, OF NEW YORK, n. Y.

STERILIZER.

Application filed May 7, 1917.

To all whom it may concern:

Be it known that I, CONRAD MEYER, a subject of the Emperor of Germany,residing at New York, in the county and State of New York, have inventedcertain new and useful Improvements in Sterilizers, of which thefollowing is a full, clear, and exact specification.

This invention relates to sterilizers for dental and surgicalinstruments, and the like, and has for its object to provide a device ofthis kind of improved construction and adapted to sterilize aconsiderable number of instruments at the same time.

Another object is to sterilize the instruments more effectively bysubjecting them to the action of superheated steam. Other objects willappear as the description proceeds.

The invention will be first hereinafter described in connection with theaccompanying drawings, which constitute part of, this specification, andthen more specifically delined in the claims at the end of thedescription.

In the accompanying drawings, wherein similar reference characters areused to designate corresponding parts throughout the several viewsFigure 1 is a front elevation of a sterilizer constructed substantiallyin accordance with this invention.

Figure 2 is a sectional view on the line II-II of Fig. 1.

Fig. 3 is a top plan view of the sterilizer.

Fig. 4 is an under plan view thereof.

Fig. 5 is a plan view of the tray for holding the instruments to besterilized.

Fig. 6 is a broken front elevation of the 4.0 sterilizer, showing thesteam pipe and gas burner.

Fig. 7 is a detail view of the ring pull on the tray, and

Fig. 8 is a detailed view of one of the supports for the gas burner.

The sterilizer comprises a casing 1 preferably rectangular in form andsupported on legs 2. The casing is divided by a vertical transversepartition 3 into a steam generating chamber 4iand a sterilizing chamber5, as best illustrated in Fig. 6. The bottom of the chamber 5 is open at6, Fig. 4. In the front of the chamber 5 there is an opening 7 for theinsertion and removal of a tray 10 for holding the instruments to besteri- Specification of Letters Patent.

Patented Aug. 21, 1917. Serial No. 166,873.

lized. Said tray is supported within the sterilizer by hangers 8 at eachend having inwardly turned flanges 9, Fig. 6.

The tray 10 has a front plate 11 which is somewhat larger than theopening in the front of the sterilizer and adapted to close said.opening and form a stop to limit the inward movement of the tray. Thebottom of the tray is perforated, as at 14. On the front plate 11 thereis a ring pull 12 for drawing out the tray when it is not hot. Otherpulls or handles 13 are also provided for use when the tray is hot, saidlatter handles being insulated from the heat in any suitable manner. 7 O

l Vater may be supplied to the steam generating chamber of thesterilizer through a pipe 16 having a removable plug or cap 15. The pipe16 has two branches entering the casing, a lower one 17-and an upper one18,

the latter being arranged above the normal level of the water in thecasing. The filling pipe 16 also contains a water gage 19 be tween thebranches 17 and 18.

A pipe 20 extends up from the bottom portion of the steam generatingchamber a to a point well above the normal water level therein, and hasa downwardly turned upper end 21 terminating preferably slightly abovethe branch pipe 18. The pipe 20 ex tends through the partition 3 andalong the full length of the sterilizing chamber 5 just above theopening in the bottom thereof. The extremity of the pipe extension 22 issupported by a suitable bracket 24, while the place where it passesthrough the parti tion 3 is fitted with water tight packing 25. Thehorizontal pipe section 22 has perfora tions 23 along its upper facethrough which steam generated in the chamber 4 and conducted to saidpipe section 22 by the pipe 20, may be discharged into the sterilizingchamber against the perforated bottom of the tray 10. The steamgenerating chamber a is preferably provided with a drain cook 26.

Below the casing 1 and entirely independent thereof is a gas burner 27comprising a straight pipe extending the full length of said casing, andsupported on suitable brackets 28. Said gas burner pipe 27 has a largeopening 29 in its upper face below the steam generating chamber, and aseries of smaller openings 30 in its upper face below the sterilizingchamber. The flame from the large opening 29 plays upon the bottom ofthe steam generating chamber and serves to heat the water therein toform the steam, while the flames from the smaller openings 30 playdirectly upon the steam pipe 22, whereby the steam ejected from saidpipe 22 through the openings 23 therein is highly superheated before itcomes in contact with the instruments placed in the tray 10130 besterilized. The burner pipe 27 may be fitted with the usualBunsen-coupling 31 to which" a hose (not shown) from a gas fixture may,

be attached. A vent 32 for the steam may be placed at the top of thesterilizing chamber. The superheated steam after passing up through theperforated bottom of the tray 10 and acting upon the instruments whichmay be placed therein, escapes through said vent 32 to the outsideatmosphere.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is 1. In a sterilizer ofthe character described, a sterilizing chamber having an opening initsbottom, a steam pipev arranged in said chamber above the opening andhaving steam ejection perforations in its upper face, and a gas burnerextending below the opening in the bottom of the sterilizing chamber andhaving openings in its upper face from which flames are adapted to playdirectly upon the steam pipe for the purpose specified.

2. In a sterilizer of the character de scribed, a casing, a partitiondividing said casing into a steam generating chamberand a sterilizingchamber, the latter being open at the bottom, a steam pipe for conveyingsteam from the steam generating chamber to the sterilizing chamber, saidsteam pipe extending along the open bottom of said latter' chamber andhaving steam ejecting openings in its upper face, and a burner extendingbelow both chambers and having openings from which flames may play uponthe generating chamber and also upon the steam conveying pipe throughthe. bottom of the sterilizing chamber for the purpose specified.

3. In a sterilizer of the character described, a casing containing asteam generating chamber and a sterilizing chamber, means in the latterchamber for holding in struments to be sterilized, a steam pipe forconveying steam from the generating chamher to the sterilizing chamber,said steaml pipe extending up through the enerating chamber and having adownwardly turned upper end arranged above the normal water level insaid chamber, a portion of said steam pipe also extending along thebottom portion of the vsterilizing chamber and hav- CONRAD MEYER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

.Washington, D. 0;

